From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE92EC433ED for ; Fri, 23 Apr 2021 13:53:41 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5032261450 for ; Fri, 23 Apr 2021 13:53:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5032261450 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=poorly.run Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9128E6EB7B; Fri, 23 Apr 2021 13:53:40 +0000 (UTC) Received: from mail-il1-x130.google.com (mail-il1-x130.google.com [IPv6:2607:f8b0:4864:20::130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B9E96E0E8 for ; Fri, 23 Apr 2021 13:53:39 +0000 (UTC) Received: by mail-il1-x130.google.com with SMTP id c3so34625215ils.5 for ; Fri, 23 Apr 2021 06:53:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=poorly.run; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=enxA0jDxQH8/90qRuPZ7QUhg+lPFtjYbIroTnbfeeGo=; b=HkKewWUBtZjysoTAN+6Napt2wK6vPpLfXArsR5jUF8bzLiOFZh5DHyYlQurNDqFCbg u9VdeqfbQoUhfKoZTsX9T0nXEybXc3mSuvKFfvsauiLZ8CULjE9pNibAvZAj5NrmlISi XA+qD0bBQqAtclwX8gCV+/RPZFVK1rpb099YEIutnqSfBUOe2WwOFW97MoHURyrShGMe An6gTkGr2o6fFCsLcarHTQF1jxVCQCpLXJSxx69SqflELDov2G3O7APVfjRGDr7u8/D0 OO9l4OQ9mpA1HpRAiw2xXnkFZLf4PmelUEIZlZajQ09Y9SXbuvNLH+ENDaj3HHLbmehK 2Wlw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=enxA0jDxQH8/90qRuPZ7QUhg+lPFtjYbIroTnbfeeGo=; b=sVvLxqgOg2uvxcRbLP9+5mYSoLO7VuvFnTYeZrd6EAf5hpMbr+fSj9CrzcJJHnyH3h Y8+mjmPsoFi5QFIuCL87miuH6G85ZwTC2k4LEYvajk7dtC1y4U0LW7Ot7tGzNjtvuNlr L6eqWDzhPehbBcRy6TVsgCR7Uarsos15p5IraQ0wO2rp/sdq4GLyaL/aDUZN2jJJEUP6 TbxtOWFjuehiaKmJq944OyDfiG0lJRMzYXKK5CxUpbn+KKQK8jTFf3LdqLslLYpgDiIn FyPkcFgU2OnH4O6ztf55P0LoT0fCJQkut5YFz7oQRWRvgnxQ1tmAWGoc7q8A1T0LYB0T Hjww== X-Gm-Message-State: AOAM533efOH1UJYgJmctxsRqiXpysi03o5R+BCMSDGGlmG2VfI3ymMe8 U3AZaREqpLIndcCTlCPO0Uh7R77ipApTV4a7cI5s7w== X-Google-Smtp-Source: ABdhPJyRuOcgN27WEgv2EuvmfXzx9OGUw3RQE4cZsvSCn4IKNCKY5uXhpcMAGC9Jn9ndKqUvOZFtXJwVRcRQywlErEw= X-Received: by 2002:a05:6e02:1d06:: with SMTP id i6mr3030247ila.165.1619186018640; Fri, 23 Apr 2021 06:53:38 -0700 (PDT) MIME-Version: 1.0 References: <20210409045314.3420733-1-hsinyi@chromium.org> In-Reply-To: <20210409045314.3420733-1-hsinyi@chromium.org> From: Sean Paul Date: Fri, 23 Apr 2021 09:53:02 -0400 Message-ID: Subject: Re: [PATCH 1/2] drm/mediatek: set panel orientation before drm_dev_register(). To: Hsin-Yi Wang X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chun-Kuang Hu , devicetree , David Airlie , LKML , dri-devel , Enric Balletbo i Serra , Rob Herring , "moderated list:ARM/Mediatek SoC support" , Matthias Brugger , linux-arm-kernel Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, Apr 9, 2021 at 12:53 AM Hsin-Yi Wang wrote: > > drm_dev_register() sets connector->registration_state to > DRM_CONNECTOR_REGISTERED and dev->registered to true. If > drm_connector_set_panel_orientation() is first called after > drm_dev_register(), it will fail several checks and results in following > warning. So set panel orientation in dsi before drm_dev_register() is > called. > > [ 4.480976] ------------[ cut here ]------------ > [ 4.485603] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:45 __drm_mode_object_add+0xb4/0xbc > > [ 4.609772] Call trace: > [ 4.612208] __drm_mode_object_add+0xb4/0xbc > [ 4.616466] drm_mode_object_add+0x20/0x2c > [ 4.620552] drm_property_create+0xdc/0x174 > [ 4.624723] drm_property_create_enum+0x34/0x98 > [ 4.629241] drm_connector_set_panel_orientation+0x64/0xa0 > [ 4.634716] boe_panel_get_modes+0x88/0xd8 > [ 4.638802] drm_panel_get_modes+0x2c/0x48 > [ 4.642887] panel_bridge_get_modes+0x1c/0x28 > [ 4.647233] drm_bridge_connector_get_modes+0xa0/0xd4 > [ 4.652273] drm_helper_probe_single_connector_modes+0x218/0x700 > [ 4.658266] drm_mode_getconnector+0x1b4/0x45c > [ 4.662699] drm_ioctl_kernel+0xac/0x128 > [ 4.666611] drm_ioctl+0x268/0x410 > [ 4.670002] drm_compat_ioctl+0xdc/0xf0 > [ 4.673829] __arm64_compat_sys_ioctl+0xc8/0x100 > [ 4.678436] el0_svc_common+0xf4/0x1c0 > [ 4.682174] do_el0_svc_compat+0x28/0x3c > [ 4.686088] el0_svc_compat+0x10/0x1c > [ 4.689738] el0_sync_compat_handler+0xa8/0xcc > [ 4.694171] el0_sync_compat+0x178/0x180 > [ 4.698082] ---[ end trace b4f2db9d9c88610b ]--- > [ 4.702721] ------------[ cut here ]------------ > [ 4.707329] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:243 drm_object_attach_property+0x48/0xb8 > > [ 4.833830] Call trace: > [ 4.836266] drm_object_attach_property+0x48/0xb8 > [ 4.840958] drm_connector_set_panel_orientation+0x84/0xa0 > [ 4.846432] boe_panel_get_modes+0x88/0xd8 > [ 4.850516] drm_panel_get_modes+0x2c/0x48 > [ 4.854600] panel_bridge_get_modes+0x1c/0x28 > [ 4.858946] drm_bridge_connector_get_modes+0xa0/0xd4 > [ 4.863984] drm_helper_probe_single_connector_modes+0x218/0x700 > [ 4.869978] drm_mode_getconnector+0x1b4/0x45c > [ 4.874410] drm_ioctl_kernel+0xac/0x128 > [ 4.878320] drm_ioctl+0x268/0x410 > [ 4.881711] drm_compat_ioctl+0xdc/0xf0 > [ 4.885536] __arm64_compat_sys_ioctl+0xc8/0x100 > [ 4.890142] el0_svc_common+0xf4/0x1c0 > [ 4.893879] do_el0_svc_compat+0x28/0x3c > [ 4.897791] el0_svc_compat+0x10/0x1c > [ 4.901441] el0_sync_compat_handler+0xa8/0xcc > [ 4.905873] el0_sync_compat+0x178/0x180 > [ 4.909783] ---[ end trace b4f2db9d9c88610c ]--- > > Signed-off-by: Hsin-Yi Wang > --- > drivers/gpu/drm/mediatek/mtk_dsi.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c > index ae403c67cbd9..45a702ee09f3 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c > @@ -205,6 +205,7 @@ struct mtk_dsi { > u32 irq_data; > wait_queue_head_t irq_wait_queue; > const struct mtk_dsi_driver_data *driver_data; > + enum drm_panel_orientation orientation; > }; > > static inline struct mtk_dsi *bridge_to_dsi(struct drm_bridge *b) > @@ -966,6 +967,8 @@ static int mtk_dsi_encoder_init(struct drm_device *drm, struct mtk_dsi *dsi) > } > drm_connector_attach_encoder(dsi->connector, &dsi->encoder); > > + drm_connector_set_panel_orientation(dsi->connector, dsi->orientation); > + > return 0; > > err_cleanup_encoder: > @@ -1029,6 +1032,12 @@ static int mtk_dsi_probe(struct platform_device *pdev) > ret = PTR_ERR(dsi->next_bridge); > goto err_unregister_host; > } > + > + ret = of_drm_get_panel_orientation(panel->dev->of_node, &dsi->orientation); > + if (ret) { > + dev_err(dev, "failed to get panel orientation %d\n", ret); > + return ret; > + } I don't think this is the right place to mine orientation since it duplicates the call from the panel driver. Instead, how about splitting out property_create_enum/attach_orientation_property from set_panel_orientation such that you can attach the property (with UNKNOWN value) in the connector init and then leave the panel to set it properly in get_modes (I kind of disagree with populating this in get_modes as well, but I don't think there's anywhere else to stick it right now)? AFAICT orientation is the only property which has the create/attach calls in the set function which seems like a perfect recipe for this type of failure. Sean > } > > dsi->driver_data = of_device_get_match_data(dev); > -- > 2.31.1.295.g9ea45b61b8-goog > _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel